Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 419 insertions, 0 deletions

diff --git a/servers/slapd/back-mdb/add.c b/servers/slapd/back-mdb/add.c
new file mode 100644
index 0000000..f1632e2
--- /dev/null
+++ b/servers/slapd/back-mdb/add.c
@@ -0,0 +1,419 @@
+/* add.c - ldap mdb back-end add routine */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <ac/string.h>
+
+#include "back-mdb.h"
+
+int
+mdb_add(Operation *op, SlapReply *rs )
+{
+	struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
+	struct berval	pdn;
+	Entry		*p = NULL, *oe = op->ora_e;
+	char textbuf[SLAP_TEXT_BUFLEN];
+	size_t textlen = sizeof textbuf;
+	AttributeDescription *children = slap_schema.si_ad_children;
+	AttributeDescription *entry = slap_schema.si_ad_entry;
+	MDB_txn		*txn = NULL;
+	MDB_cursor	*mc = NULL;
+	MDB_cursor	*mcd;
+	ID eid, pid = 0;
+	mdb_op_info opinfo = {{{ 0 }}}, *moi = &opinfo;
+	int subentry;
+	int numads = mdb->mi_numads;
+
+	int		success;
+
+	LDAPControl **postread_ctrl = NULL;
+	LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
+	int num_ctrls = 0;
+
+	Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(mdb_add) ": %s\n",
+		op->ora_e->e_name.bv_val );
+
+	ctrls[num_ctrls] = 0;
+
+	/* check entry's schema */
+	rs->sr_err = entry_schema_check( op, op->ora_e, NULL,
+		get_relax(op), 1, NULL, &rs->sr_text, textbuf, textlen );
+	if ( rs->sr_err != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": entry failed schema check: "
+			"%s (%d)\n", rs->sr_text, rs->sr_err );
+		goto return_results;
+	}
+
+	/* begin transaction */
+	rs->sr_err = mdb_opinfo_get( op, mdb, 0, &moi );
+	rs->sr_text = NULL;
+	if( rs->sr_err != 0 ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": txn_begin failed: %s (%d)\n",
+			mdb_strerror(rs->sr_err), rs->sr_err );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+	txn = moi->moi_txn;
+
+	/* add opattrs to shadow as well, only missing attrs will actually
+	 * be added; helps compatibility with older OL versions */
+	rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
+	if ( rs->sr_err != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": entry failed op attrs add: "
+			"%s (%d)\n", rs->sr_text, rs->sr_err );
+		goto return_results;
+	}
+
+	if ( get_assert( op ) &&
+		( test_filter( op, op->ora_e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
+	{
+		rs->sr_err = LDAP_ASSERTION_FAILED;
+		goto return_results;
+	}
+
+	subentry = is_entry_subentry( op->ora_e );
+
+	/*
+	 * Get the parent dn and see if the corresponding entry exists.
+	 */
+	if ( be_issuffix( op->o_bd, &op->ora_e->e_nname ) ) {
+		pdn = slap_empty_bv;
+	} else {
+		dnParent( &op->ora_e->e_nname, &pdn );
+	}
+
+	rs->sr_err = mdb_cursor_open( txn, mdb->mi_dn2id, &mcd );
+	if( rs->sr_err != 0 ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": mdb_cursor_open failed (%d)\n",
+			rs->sr_err );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+
+	/* get entry or parent */
+	rs->sr_err = mdb_dn2entry( op, txn, mcd, &op->ora_e->e_nname, &p, NULL, 1 );
+	switch( rs->sr_err ) {
+	case 0:
+		rs->sr_err = LDAP_ALREADY_EXISTS;
+		mdb_entry_return( op, p );
+		p = NULL;
+		goto return_results;
+	case MDB_NOTFOUND:
+		break;
+	case LDAP_BUSY:
+		rs->sr_text = "ldap server busy";
+		goto return_results;
+	default:
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+
+	if ( !p )
+		p = (Entry *)&slap_entry_root;
+
+	if ( !bvmatch( &pdn, &p->e_nname ) ) {
+		rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
+			op->o_tmpmemctx );
+		if ( p != (Entry *)&slap_entry_root && is_entry_referral( p )) {
+			BerVarray ref = get_entry_referrals( op, p );
+			rs->sr_ref = referral_rewrite( ref, &p->e_name,
+				&op->o_req_dn, LDAP_SCOPE_DEFAULT );
+			ber_bvarray_free( ref );
+		} else {
+			rs->sr_ref = NULL;
+		}
+		if ( p != (Entry *)&slap_entry_root )
+			mdb_entry_return( op, p );
+		p = NULL;
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": parent "
+			"does not exist\n" );
+
+		rs->sr_err = LDAP_REFERRAL;
+		rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
+		goto return_results;
+	}
+
+	rs->sr_err = access_allowed( op, p,
+		children, NULL, ACL_WADD, NULL );
+
+	if ( ! rs->sr_err ) {
+		if ( p != (Entry *)&slap_entry_root )
+			mdb_entry_return( op, p );
+		p = NULL;
+
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": no write access to parent\n" );
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		rs->sr_text = "no write access to parent";
+		goto return_results;;
+	}
+
+	if ( p != (Entry *)&slap_entry_root ) {
+		if ( is_entry_subentry( p ) ) {
+			mdb_entry_return( op, p );
+			p = NULL;
+			/* parent is a subentry, don't allow add */
+			Debug( LDAP_DEBUG_TRACE,
+				LDAP_XSTRING(mdb_add) ": parent is subentry\n" );
+			rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
+			rs->sr_text = "parent is a subentry";
+			goto return_results;;
+		}
+
+		if ( is_entry_alias( p ) ) {
+			mdb_entry_return( op, p );
+			p = NULL;
+			/* parent is an alias, don't allow add */
+			Debug( LDAP_DEBUG_TRACE,
+				LDAP_XSTRING(mdb_add) ": parent is alias\n" );
+			rs->sr_err = LDAP_ALIAS_PROBLEM;
+			rs->sr_text = "parent is an alias";
+			goto return_results;;
+		}
+
+		if ( is_entry_referral( p ) ) {
+			BerVarray ref = get_entry_referrals( op, p );
+			/* parent is a referral, don't allow add */
+			rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
+				op->o_tmpmemctx );
+			rs->sr_ref = referral_rewrite( ref, &p->e_name,
+				&op->o_req_dn, LDAP_SCOPE_DEFAULT );
+			ber_bvarray_free( ref );
+			mdb_entry_return( op, p );
+			p = NULL;
+			Debug( LDAP_DEBUG_TRACE,
+				LDAP_XSTRING(mdb_add) ": parent is referral\n" );
+
+			rs->sr_err = LDAP_REFERRAL;
+			rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
+			goto return_results;
+		}
+
+	}
+
+	if ( subentry ) {
+		/* FIXME: */
+		/* parent must be an administrative point of the required kind */
+	}
+
+	/* free parent */
+	if ( p != (Entry *)&slap_entry_root ) {
+		pid = p->e_id;
+		if ( p->e_nname.bv_len ) {
+			struct berval ppdn;
+
+			/* ITS#5326: use parent's DN if differs from provided one */
+			dnParent( &op->ora_e->e_name, &ppdn );
+			if ( !dn_match( &p->e_name, &ppdn ) ) {
+				struct berval rdn;
+				struct berval newdn;
+
+				dnRdn( &op->ora_e->e_name, &rdn );
+
+				build_new_dn( &newdn, &p->e_name, &rdn, NULL ); 
+				if ( op->ora_e->e_name.bv_val != op->o_req_dn.bv_val )
+					ber_memfree( op->ora_e->e_name.bv_val );
+				op->ora_e->e_name = newdn;
+
+				/* FIXME: should check whether
+				 * dnNormalize(newdn) == e->e_nname ... */
+			}
+		}
+
+		mdb_entry_return( op, p );
+	}
+	p = NULL;
+
+	rs->sr_err = access_allowed( op, op->ora_e,
+		entry, NULL, ACL_WADD, NULL );
+
+	if ( ! rs->sr_err ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": no write access to entry\n" );
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		rs->sr_text = "no write access to entry";
+		goto return_results;;
+	}
+
+	/* 
+	 * Check ACL for attribute write access
+	 */
+	if (!acl_check_modlist(op, oe, op->ora_modlist)) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": no write access to attribute\n" );
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		rs->sr_text = "no write access to attribute";
+		goto return_results;;
+	}
+
+	rs->sr_err = mdb_cursor_open( txn, mdb->mi_id2entry, &mc );
+	if( rs->sr_err != 0 ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": mdb_cursor_open failed (%d)\n",
+			rs->sr_err );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+
+	rs->sr_err = mdb_next_id( op->o_bd, mc, &eid );
+	if( rs->sr_err != 0 ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": next_id failed (%d)\n",
+			rs->sr_err );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+	op->ora_e->e_id = eid;
+
+	/* dn2id index */
+	rs->sr_err = mdb_dn2id_add( op, mcd, mcd, pid, 1, 1, op->ora_e );
+	mdb_cursor_close( mcd );
+	if ( rs->sr_err != 0 ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": dn2id_add failed: %s (%d)\n",
+			mdb_strerror(rs->sr_err), rs->sr_err );
+
+		switch( rs->sr_err ) {
+		case MDB_KEYEXIST:
+			rs->sr_err = LDAP_ALREADY_EXISTS;
+			break;
+		default:
+			rs->sr_err = LDAP_OTHER;
+		}
+		goto return_results;
+	}
+
+	/* attribute indexes */
+	rs->sr_err = mdb_index_entry_add( op, txn, op->ora_e );
+	if ( rs->sr_err != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": index_entry_add failed\n" );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "index generation failed";
+		goto return_results;
+	}
+
+	/* id2entry index */
+	rs->sr_err = mdb_id2entry_add( op, txn, mc, op->ora_e );
+	if ( rs->sr_err != 0 ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(mdb_add) ": id2entry_add failed\n" );
+		if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ) {
+			rs->sr_text = "entry is too big";
+		} else {
+			rs->sr_err = LDAP_OTHER;
+			rs->sr_text = "entry store failed";
+		}
+		goto return_results;
+	}
+
+	/* post-read */
+	if( op->o_postread ) {
+		if( postread_ctrl == NULL ) {
+			postread_ctrl = &ctrls[num_ctrls++];
+			ctrls[num_ctrls] = NULL;
+		}
+		if ( slap_read_controls( op, rs, op->ora_e,
+			&slap_post_read_bv, postread_ctrl ) )
+		{
+			Debug( LDAP_DEBUG_TRACE,
+				"<=- " LDAP_XSTRING(mdb_add) ": post-read "
+				"failed!\n" );
+			if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
+				/* FIXME: is it correct to abort
+				 * operation if control fails? */
+				goto return_results;
+			}
+		}
+	}
+
+	if ( moi == &opinfo ) {
+		LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.moi_oe, OpExtra, oe_next );
+		opinfo.moi_oe.oe_key = NULL;
+		if ( op->o_noop ) {
+			mdb->mi_numads = numads;
+			mdb_txn_abort( txn );
+			rs->sr_err = LDAP_X_NO_OPERATION;
+			txn = NULL;
+			goto return_results;
+		}
+
+		rs->sr_err = mdb_txn_commit( txn );
+		txn = NULL;
+		if ( rs->sr_err != 0 ) {
+			mdb->mi_numads = numads;
+			rs->sr_text = "txn_commit failed";
+			Debug( LDAP_DEBUG_ANY,
+				LDAP_XSTRING(mdb_add) ": %s : %s (%d)\n",
+				rs->sr_text, mdb_strerror(rs->sr_err), rs->sr_err );
+			rs->sr_err = LDAP_OTHER;
+			goto return_results;
+		}
+	}
+
+	Debug(LDAP_DEBUG_TRACE,
+		LDAP_XSTRING(mdb_add) ": added%s id=%08lx dn=\"%s\"\n",
+		op->o_noop ? " (no-op)" : "",
+		op->ora_e->e_id, op->ora_e->e_dn );
+
+	rs->sr_text = NULL;
+	if( num_ctrls ) rs->sr_ctrls = ctrls;
+
+return_results:
+	success = rs->sr_err;
+	send_ldap_result( op, rs );
+
+	if( moi == &opinfo ) {
+		if( txn != NULL ) {
+			mdb->mi_numads = numads;
+			mdb_txn_abort( txn );
+		}
+		if ( opinfo.moi_oe.oe_key ) {
+			LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.moi_oe, OpExtra, oe_next );
+		}
+	} else {
+		moi->moi_ref--;
+	}
+
+	if( success == LDAP_SUCCESS ) {
+#if 0
+		if ( mdb->bi_txn_cp_kbyte ) {
+			TXN_CHECKPOINT( mdb->bi_dbenv,
+				mdb->bi_txn_cp_kbyte, mdb->bi_txn_cp_min, 0 );
+		}
+#endif
+	}
+
+	slap_graduate_commit_csn( op );
+
+	if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
+		slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
+		slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
+	}
+	return rs->sr_err;
+}